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Cummins ISL CM850 (2003-06) Fault Code: 331 PID: SID 2 SPN: 652 FMI: 5 Injector Solenoid Driver Cylinder 2 Circuit - Current Below Normal or Open Circuit. High resistance or no current detected at number 2 injector driver or RETURN pin.

Cummins ISL CM850 (2003-06) Fault Code: 332 PID: SID 4 SPN: 654 FMI: 5 Injector Solenoid Driver Cylinder 4 Circuit - Current Below Normal or Open Circuit. High resistance or no current detected at number 4 injector driver or RETURN pin.

Cummins ISL CM850 (2003-06) Fault Code: 334 PID: 110 SPN: 110 FMI: 2 Engine Coolant Temperature - Data Erratic, Intermittent, or Incorrect. The engine coolant temperature reading is not changed with engine operating conditions.

Cummins ISL CM850 (2003-06) Fault Code: 341 PID: SID 253 SPN: 530 FMI: 2 Engine Control Module Data Lost - Data Erratic, Intermittent or Incorrect. Severe loss of data from the ECM.

Cummins ISL CM850 (2003-06) Fault Code: 342 PID: SID 253 SPN: 630 FMI: 13 Electronic Calibration Code Incompatibility - Out of Calibration. An incompatable calibration between the primary and secondary OEM installed ECM's has been detected.

Cummins ISL CM850 (2003-06) Fault Code: 343 PID: SID 254 SPN: 629 FMI: 12 Engine Control Module Warning Internal Hardware Failure - Bad Intelligent Device or Component.

Cummins ISL CM850 (2003-06) Fault Code: 351 PID: SID 254 SPN: 627 FMI: 12 Injector Power Supply - Bad Intelligent Device or Component. The ECM measured injector boost voltage is low.

Cummins ISL CM850 (2003-06) Fault Code: 352 PID: SID 212 SPN: 1079 FMI: 4 Sensor Supply Voltage Number 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at sensor supply number 1 circuit.

Cummins ISL CM850 (2003-06) Fault Code: 386 PID: SID 212 SPN: 1079 FMI: 3 Sensor Supply Voltage number 1 Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply number 1 circuit.

Cummins ISL CM850 (2003-06) Fault Code: 387 PID: SID 221 SPN: 1043 FMI: 3 Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply circuit for the accelerator pedal or lever position sensor.